package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("./demo.txt");
        FileOutputStream fos=new FileOutputStream("./demoCopy.txt");
        int d=0;
        while ((d=fis.read())!=-1){
            fos.write(d);
        }
        System.out.println("复制完毕了");
        fis.close();
        fos.close();
    }
}
